ENG - Derivation of all linear transformations - 2
Transcript of ENG - Derivation of all linear transformations - 2
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Derivation of All Linear Transformations that Meet the Results of
Michelson-Morley’s Experiment and Discussion of the Relativity
Basics
Roman Szostek
Rzeszow University of Technology, Department of Quantitative Methods, Rzeszow, Poland [email protected]
Abstract: The paper presents a formal proof that the mathematics on which the Special Theory
of Relativity (STR) is based is currently misinterpreted. The evidence is based on an analysis
of the importance of parameter e(v). Understanding the meaning of this parameter was
achieved by analyzing the general form of transformation, for which the Lorentz
transformation is only a special case. If e(v) ≠ 0 then the clocks in inertial systems are
desynchronized. Measurements, e.g. one-way speed, using such clocks do not give real values.
The article shows that there are infinitely many different transformations in which one-way
speed of light is always equal to c. The Lorentz transformation is only one of those infinitely many
transformations.
In this article, the whole class of linear transformations of time and coordinate was derived.
Transformations were derived on the assumption that conclusions from Michelson-Morley’s and
Kennedy-Thorndikea’s experiments are met for the observer from each inertial frame of reference,
i.e. that the mean velocity of light in the vacuum flowing along the way back and forth is constant. It was also assumed that there is at least one inertial frame of reference, in which the velocity of light in a vacuum in each direction has the same value c, and the space is isotropic for observers from this distinguished inertial frame of reference (universal frame of reference).
Derived transformations allow for building many different kinematics according to
Michelson-Morley’s and Kennedy-Thorndikea’s experiments.
The class of transformations derived in the study is a generalization of transformations
derived in the paper [10], which consists in enabling non-zero values of parameter e(v). The idea of
such a generalization derives from the person, who gave me this extended transformations class for
analysis and publication.
Keywords: coordinate and time transformation; kinematics; universal frame of reference; one-way
speed of light; anisotropy of cosmic microwave background
1. Introduction
The class of transformations derived in this article is a generalization of transformations
derived in the paper [10]. In that paper all linear transformations that are possible for the parameter
e(v) = 0 were derived. In the paper [11] one of these transformations was analyzed.
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It is a common belief in the contemporary physics that the Michelson-Morley [3] and
Kennedy-Thorndike [1] experiments proved that the velocity of light is absolutely constant and that
there is no universal frame of reference called the ether. Based on the analysis of these experiments,
the Lorentz transformation, on which the Special Theory of Relativity is based, was derived. It is
currently considered that the Special Theory of Relativity is the only theory of kinematics of bodies
which correctly explains the Michelson-Morley experiment and all other experiments in which the
velocity of light is measured.
It turns out that the velocity of light in one direction (momentary) has never been accurately
measured. In all accurate measurements of the velocity of light, only the average velocity of light
traveling the path along the closed trajectory was measured. In order to measure the velocity of
light, light had to return to the measuring device. In the simplest case, light was sent to a mirror and
back as was done in experiments by Armand Fizeau in 1849 and by Jean Foucault in 1850. The
same happens in Michelson-Morley and Kennedy-Thorndike experiments in which sources of light
after being reflected by mirrors return to the source point. From these experiments, it is clear that
the average velocity of light traveling the path to and back is constant, and not that the velocity of
light in one direction (momentary) is constant.
There are publications in which numerous coordinate and time transformations [2], [4], [5],
[6], [14] are presented. In this article all possible linear transformations (without turnover) are
derived. Derivation presented in this article is based on the postulate of average velocity of light,
and not on clock synchronization. From the presented analysis it results that there are infinitely
many coordinates and time transformations which are in accordance with the results of Michelson-
Morley’s experiment. On the basis of these transformations many kinematics of bodies can be built,
describing different physical properties, such as time dilation. It follows that there are infinitely
many different kinematics, which are consistent with the results of Michelson-Morley’s
experiments.
2. Adopted assumptions
The following assumptions have been adopted in the presented analysis:
I. Coordinate and time transformation «inertial frame of reference – inertial frame of reference»
is linear.
II. There is at least one inertial frame of reference in which the velocity of light in a vacuum is the
same in each direction. This system is called a universal frame of reference. This one-way
speed of light constant is indicated by the symbol c = constants.
III. The average velocity of light in the vacuum flowing way back and forth is constant for each
observer from the inertial frame of reference. This average velocity does not depend on the
observer’s velocity in relation to the universal frame of reference, nor on the direction of light
propagation. This average velocity is indicated by the symbol cp.
On the basis of assumption II and III it can be shown that the average velocity cp is equal to
one-way speed c. It is important to note that on the basis of III, the cp value is the same for each
observer, i.e. also for the one that does not move in relation to the universal frame of reference. As
for the motionless observer in relation to the universal frame of reference it has the value of c, thus
cp = c.
Let the light impulse move along a path of length L in one direction with velocity c+ ≥ 0 at
time t1, and in other direction along the same path L with velocity c– ≤ 0 at time t2. Then the average
velocity of light on the back and forth path is
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−+−+−
=
−+
=+
==
ccc
L
c
L
L
tt
Lccp 11
222
21
(1)
On this basis, an assumption III in the form of following equation is obtained
ccc
211=− −+ (2)
3. Transformations for one spatial dimension
Indications shown in Figure 1 are adopted. Coordinates in the universal frame of reference U
will be indicated with symbols x, t. Coordinates in the inertial frame of reference U' will be
indicated with symbols x', t'. The inertial frame of reference U' moves in relation to the universal
frame of reference U with velocity v along parallel x and x' axes. All velocities with direction such
as x axis direction (or x' in U' frame) have positive values, while those with opposite direction have
negative values. But the symbol c will always have a positive value, regardless of the direction in
which the light moves, i.e. always c = + 299 792 458 m/s.
Fig. 1. Inertial frame of reference U' move in relation to the universal frame of reference U with velocity v.
When the beginnings of frames overlapped, then the clocks at that beginning were reset to
zero. The clocks in universal frame of reference U were synchronized with the clock at the
beginning of this system with the light of Einstein method. At this stage, it is not determined how
the clocks in U' frame are synchronized.
Transformation from a universal frame of reference U to an inertial frame of reference U'
has, on the basis of assumption I, the following form
+=′
+=′
tfxet
tbxax
1
(3)
Transformation parameters are continuous velocity v functions with the following properties
]1[
]m/s[
[m/s]
]1[
)0)(0(
0)(
)0)(0(
0)(
1)0(
0)0(
0)0(
1)0(
1
>⇒<∧
>∧
<⇒>∧
>∧
=
=
=
=
vbv
vf
vbv
va
f
e
b
a
(4)
Parameters a(0) = 1, b(0) = 0, e1(0) = 0 and f (0) = 1 because for v = 0 the systems U and U'
are identical, i.e. they show the same coordinates of position and time.
The condition a(v) > 0must be met due to the same direction of x and x' axes (Figure 1), i.e.
if x increases, then x' also increases. The condition (v > 0 ⇒ b(v) < 0) must be met due to the same
direction of x and x' axes (Figure 1), i.e. for established x coordinate if time t elapse, then x'
coordinate decreases. Similarly, if the velocity v is negative, i.e. the U' frame moves in the opposite
t =t' = 0
U' v
0
x' 4
2
3
6 5
12 1
7
10
8
9
11
4
2
3
6 5
12 1
7
10
8 9
11
x U
1
0 1
t
t'
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direction, then coordinate x' increases, i.e. (v < 0 ⇒ b(v) > 0). Condition f (v) > 0 must be met as if t
increases, t' increases as well.
For our needs it will conveniently use the parameter e(v), where e1(v) = v·e(v). Introduction
of such a parameter is acceptable, because according to (4) there is an e1(0) = 0. The parameter e(v)
[s2/m
2] is a continuous velocity function v. Now the transformation (3) takes a form of
+=′
+=′
tfxvet
tbxax (5)
Differentials from transformation (5) have the form (v = constants) of
+=′
+=′
dtfdxvetd
dtbdxaxd (6)
Let’s consider the body, which rests in the inertial frame of reference U'. As it is motionless
in this system, and therefore for its coordinate of position there is
0=′xd (7)
Note that the velocity of body under consideration in relation to system U (i.e. dx/dt) is
a velocity v of system U' in relation to system U. Therefore
vdt
dx= (8)
From the differential coordinate (6) on the basis of (7) and (8) the following is obtained
bvabdt
dxa
dt
dtbdxa
dt
xdxd +=+=
+=
′=′=0 (9)
It follows that
vab −= (10)
On this basis the transformation (5) takes the form of
+=′
−=′
tfxvet
tvxax )( (11)
Differentials from transformation (11) have the form (v = constants) of
+=′
−=′
dtfdxvetd
dtvdxaxd )( (12)
Now consider a light impulse that moves along x and x' axes. When light moves in the direction of x' axis and velocity v, then the velocity of light in the inertial frame of reference U' has
the following value
)(vctd
xdx
+=′′
(13)
while in the universal frame of reference U has a value (assumption II) of
0≥= cdt
dx (14)
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When light moves in the direction opposite to x' axis and velocity v, then the velocity of light in the inertial frame of reference U' has the value of
)(vctd
xdx
−=′′
(15)
while in the universal frame of reference U has a value (assumption II) of
0≤−= cdt
dx (16)
When the differentials (12) are divided into sides, then on the basis of (13) and (14) the
following is obtained
fcve
vca
fdt
dxve
vdt
dxa
dtfdxve
dtvdxa
td
xdvcx +
−=
+
−=
+−
=′′
=+ )()()( (17)
When the differentials (12) are divided into sides, then on the basis of (15) and (16) the
following is obtained
fcve
vca
fdt
dxve
vdt
dxa
dtfdxve
dtvdxa
td
xdvcx +−
+−=
+
−=
+−
=′′
=− )()()( (18)
Formula (18) can be obtained from formula (17) by changing the sign before velocity c (this
means changing the direction of movement of a light pulse).
Formula (18) can also be obtained by simultaneously changing (17) the signs before
velocities v and cx+ (this means changing the direction of velocities v and x' axis direction at the
same time). In order to obtain formula (18), parameter e(v) must not change the sign. On this basis
the following properties are obtained for this parameter
0)()( ≥−⋅ veve (19)
From formulas (17) and (18) after taking into account (19), it results that one-way speed of light functions meet the following relation
),(),( cvccvc xx −−= +− (20)
),(),( cvccvc xx −= +− (21)
If dependencies (17) and (18) are added to equation (2) then it is obtained as follows
cvca
fcve
vca
fcve 2
)()(=
++−
+−+
(22)
In order for condition (2) to be met, parameter a(v) must be in the form of
)()()/(1
1 222
222
22 vefvef
cvvc
vefca +=+
−=
−+
⋅= γ (23)
On the basis of (23) the transformation (11) takes the form of
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+=′
−+=′
tfxvet
tvxvefx ))(( 22γ (24)
On this basis it is possible to determine the reverse transformation from the inertial frame of
reference U' to the universal frame of reference U in the form of
′+
+′+
−=
′+
+′+
=
tvef
xvef
vet
tvvef
xvef
fx
2222
2222
1
)(
1
)(
γ
γ (25)
Equations (24) and (25) are transformations sought for one spatial dimension. They contain
two parameters e(v) and f (v). These parameters must meet conditions (4) and (19). After the adoption of specific parameters, a specific transformation is obtained describing the specific
kinematics. This general form of transformation contains all possible linear transformations between the universal frame of reference U, in which light propagates with the constant velocity c,
and the inertial frame of reference U' moving relative to system U with velocity v, along x and x' axes, if in the inertial frame of reference U' of one-way speed of light has met condition (2) (i.e. assumption III).
4. Transformations for three spatial dimensions
In order to introduce two remaining spatial dimensions to the transformation, additional
assumption will be adopted:
IV. For each motionless observer in relation to the universal frame of reference, the space is isotropic, i.e. it has the same properties in each direction.
From assumption IV, results that parameters occurring in transformation (6) and (24)-(25)
meet the following properties
)()(
)()(
)()(
)()(
vfvf
veve
vbvb
vava
−=
−=
−−=
−=
(26)
Properties (26) result from (4), (19) and from the following reasoning. Parameters a(v) and f (v) must be even functions as if x' increases, then x' increases and if t increases then t' increases,
the same applies regardless of the direction of velocities v. The parameter b(v) must be odd function, because after a change of velocities v direction for a fixed coordinate x, if time t elapses,
the coordinate x' increases just as it did decreases for unchanged velocities v direction. The parameter v·e(v) must be odd because after a change of direction of velocities v for a fixed time t,
the change of time t' depends on x in the opposite way to unchanged direction of velocities v. Therefore, the parameter e(v) must be even function.
Consider the situation shown in Figure 2. In the inertial frame of reference U', the light impulse moves perpendicularly to x' axis. This light passes a distance of L', first in one direction
and then back, i.e. it returns to the starting point. Due to the assumption IV, the velocity of light in a direction perpendicular to x' axis is the
same in one direction and in the other and is c. This results from the fact that no direction
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perpendicular to velocities v (i.e. also x and x' axes) is distinguished (assumption IV) and the average velocity of light on the back and forth path is c (assumption III). For this reason, the same
light impulse for the motionless observer in relation to the universal frame of reference U will move along the arms of an isosceles triangle. For an observer from the system U, the dimensions
perpendicular to velocities v may be different than for an observer from the U' system, and therefore the height of triangle is determined by
LvL ′= )(ψ (27)
The parameter ψ (v) describes the transverse contraction of bodies moving in relation to the
universal frame of reference. This parameter should meet the following conditions
]1[0)(1)0( >∧= vψψ (28)
The parameter ψ (0) = 1 as for v = 0, the transverse dimensions are identical for observers
from U and U' systems. Condition ψ (v) > 0 must be fulfilled because the transverse dimensions do not reverse.
Fig. 2. The path of light seen from two frames of reference.
a) inertial frame of reference U', b) universal frame of reference U.
Due to assumption IV for the observer from the system U, the transverse dimensions are
contracted in the same way for each direction of velocities v. Therefore, parameter ψ (v) should meet the following condition
)()( vv −=ψψ (29)
Now the parameter ψ (v) will be set. For an observer from the system U', the following occurs
2
2 tcL
c
Lt
′∆=′⇔
′=′∆ (30)
On the basis of transformation (25) the differential (v = constants) is obtained.
x
x'
a)
U'
U
y
D
L=ψ (v)L' b)
v y'
L'
c, ½∆t'
c, ½∆t c, ½∆t
c, ½∆t'
½v∆t ½v∆t
D
t2 t1
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tdvef
xdvef
vedt ′
++′
+−
=2222
1
)(γ (31)
I.e. for the fixed coordinate x' in the system U' it is obtained as follows
tdvef
dtxd ′+
=⇒=′2
10 (32)
Formula (32) describes time dilation for motionless clock relative to U'. In Figure 2 such
a clock is at the beginning of system U'. If the time ∆t' on this clock elapses, appearing in formula
(30), then in system U will elapse the time ∆t = t2 – t1, where t1 is the time at which an impulse was sent, and t2 is the time when an impulse returned to x axis. Times t1 and t2 are measured in system U
by two different clocks. According to formula (32), the following occurs
tvef
t ′∆+
=∆2
1 (33)
From the geometry of figure it is obtained as follows
2222
4/ LtvD ′+∆= ψ (34)
and
c
Dt
2=∆ (35)
From equations (34) and (35) it is obtained as follows
c
Ltvt
22224/2 ′+∆
=∆ψ
(36)
)4/(4 222222 Ltvtc ′+∆=∆ ψ (37)
22222 )(4 tvcL ∆−=′ψ (38)
On the basis of (30) and (33) it is obtained as follows
2
22
2222
2
)(
1)(
44 t
vefvc
tc ′∆+
−=′∆
ψ (39)
222
222
)(
1
vefc
vc
+−
=ψ (40)
)()/(1
1
11)/(1
2
2
2
2
vefcv
vefcv
+−
=+
−=ψ (41)
That is, the transverse contraction parameter ψ (v) must have the following value
)(
12vef +
=γ
ψ (42)
The above analysis shows that formula (42) per parameter ψ (v) results from the assumption IV and time dilation (32).
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After taking into account (42) in transformation (24)-(25), the transformations for three spatial dimensions described by parameters e(v) and f (v) are obtained. From the universal frame of
reference U to inertial frame of reference U' has the following form
+=′
+=′
−+=′
+=′
zvefz
yvefy
tvxvefx
tfxvet
)(
)(
))((
2
2
22
γ
γ
γ (43)
From the inertial frame of reference U' to the universal frame of reference U has the
following form
′+
=
′+
=
′+
+′+
=
′+
+′+
−=
zvef
z
yvef
y
tvvef
xvef
fx
tvef
xvef
vet
)(
1
)(
1
1
)(
1
)(
2
2
2222
2222
γ
γ
γ
γ
(44)
The relation (42) can be written in a different way
21vef −=
ψγ (45)
After taking into account (45) in transformation (24)-(25) or (43)-(44), the transformations
for three spatial dimensions described by parameters e(v) and ψ (v)are obtained. From the universal
frame of reference U to inertial frame of reference U' the transformation has the following form
=′
=′
−=′
−+=′
zz
yy
tvxx
tvexvet
ψ
ψ
ψγ
ψγ
1
1
)(
1 2
(46)
From the inertial frame of reference U' to the universal frame of reference U, the
transformation has the form
′=
′=
′+′
−=
′+′−=
zz
yy
tvxvex
txvet
ψψ
ψγψγψ
ψγψ
22
2
(47)
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Equations (43)-(44) and (46)-(47) are transformations sought for all spatial dimensions. The
transformation set (43)-(44) is identical to the transformation set (46)-(47). These sets differ only in
the parameters used.
5. Selected transformations properties
Differentials from transformation (46) have the form (v = constants) of
=′
=′
−=′
−+=′
dzzd
dyyd
dtvdxxd
dtvedxvetd
ψ
ψ
ψγ
ψγ
1
1
)(
1 2
(48)
Differentials from transformation (47) have the form (v = constants) of
′=
′=
′+′
−=
′+′−=
zddz
yddy
tdvxdvedx
tdxdvedt
ψψ
ψγψγψ
ψγψ
22
2
(49)
5.1. Time dilation
The formula for time dilation for (46)-(47) transformation will be determined.
From the differential time (48) results that for the motionless observer in relation to
universal frame of reference U, the following formula for time dilation is given (also based on (45))
dtvfdtvetddx )(1
0 2 =
−=′⇒=
ψγ (50)
From the differential time (49) results that for the motionless observer in relation to inertial
frame of reference U', the following formula for time dilation is given
tddtxd ′=⇒=′ ψγ0 (51)
From formulas(50) and (51) results that observers from frames of reference U and U'
moving relative to each other will measure the same time dilation only if the parameter e(v) = 0. If
e(v) ≠ 0 then these two observers evaluate the relative passage of time differently on compared
clocks.
Time dilation (50) and (51) is written as an implication, as it is more precise than the record
commonly used in physics.
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5.2. Longitudinal length contraction (Lorentz-Fitz-Gerald)
The formulas for longitudinal length contraction (along x and x' axes) for transformation
(46)-(47) are determined.
From the differential coordinate (48), the following formula for longitudinal length
contraction (also based on (23) and (45)) results for the observer from the universal frame of
reference U
dxvadxxddt )(0 ==′⇒=ψγ
(52)
From the differential coordinate (49), the following formula for longitudinal length
contraction results for the observer from the universal frame of reference U
xdvedxtd ′
−=⇒=′ 220 ψ
γψ
(53)
From formulas (52) and (53) results that observers from frames of reference U and U'
moving relative to each other will measure the same longitudinal contraction only if the parameter
e(v) = 0. If e(v) ≠ 0 then these two observers evaluate differently the proportions of the longitudinal
dimensions measured by them.
Longitudinal length contraction (52) and (53) is written as implications, as this is more
precise than what is commonly used in physics.
5.3. Transformations of velocity
The formulas for transformations of velocity for transformations (46)-(47) will be
determined. Indications as in Figure 3 are adopted. The body moves in relation to U and U' systems.
For an observer from the system U it has velocity V, while for an observer from the system U' it has
velocity V'.
From equations (48) the following equations result
−+
=′′
−+
=′′
−+
−=
′′
dtvedxve
dz
td
zd
dtvedxve
dy
td
yd
dtvedxve
dtvdx
td
xd
2
2
2
1
1
1
1
1
)(
ψγ
ψ
ψγ
ψ
ψγ
ψγ
(54)
On this basis, the transformation of velocities from system U to system U' has the form of
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+−=′
+−=′
+−−
=′
1)(
1)(
1)(
)(2
vVve
VV
vVve
VV
vVve
vVV
x
zz
x
y
y
x
xx
ψγγ
ψγ
γ
ψγγ
(55)
Fig. 3. Movement seen from the universal frame of reference and inertial frame of reference.
From time equation (49) the following equations result
tdxdve
zd
dt
dz
tdxdve
yd
dt
dy
tdxdve
tdvxdve
dt
dx
′+′−
′=
′+′−
′=
′+′−
′+′
−
=
ψγψψ
ψγψψ
ψγψ
ψγψγψ
2
2
2
22
(56)
On this basis, the transformation of velocities from system U' to system U has the form of
ψγψψ
ψγψψ
ψγψ
ψγψγψ
+′−
′=
+′−
′=
+′−
+′
−
=
x
zz
x
y
y
x
x
x
Vve
VV
Vve
VV
Vve
vVve
V
2
2
2
22
(57)
Transformations of velocity (55) and (57) are equivalent. It is possible to show that after
introducing one to the other, the identity equations are obtained.
5.4. Velocity of light along axis x' seen in the inertial frame of reference
If the body shown in Figure 3 is an impulse of light, it moves with velocity c in system U.
Let’s consider only the case in which this impulse moves parallel to x and x' axes (i.e. it also moves
parallel to velocities v). Then
U
x
y U'
x'
V ′
U'
y' v
v
yV ′
xV ′
V yV
xVzV
z z'
zV ′
t t'
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0,0, === zyx VVcV (58)
On the basis of transformations (55), the velocity of this impulse of light seen in the inertial
frame of reference U' is obtained
0,0,1)(
)()(
2
=′=′=′=′+−
−=′=+
zzyyxx VcVcvcve
vcVvc
ψγγ
(59)
Formula (59) can also be obtained from formula (17) after applying dependencies (23) and
(45). Due to
vc
cvc
vcvc
cvc
vc
cvc
cvvc
+=−
−+=−
−=−
−=−
22
22
2
2
2 )())((
)()()/(1
1)(γ (60)
therefore, on the basis of (59) one-way speed of light with the same direction as x' axis direction
and velocities v direction has in inertial frame of reference U' the value of
0,0,)(2
2
=′=′++
=+zyx cc
vccve
cvc
γψ
(61)
One-way speed of light with the opposite direction to x' axis direction and velocities v
direction has a value in the inertial frame of reference U'
0,0,)(2
2
=′=′+−
=−zyx cc
vccve
cvc
γψ
(62)
Formula (62) is based on Formula (61) by changing the sign before velocity c (this means
changing the direction of movement of a light impulse). It can also be obtained by changing in
formula (61) the sign in front of velocity v (dependence (20) should then be taken into account,
which means a change in x' axis direction). Then before the parameters ψ (v), γ (v) and e(v), it is not
necessary to change the sign as these are even functions. Precisely because of such situations, it is
more convenient to use the even function e(v) used in transformation (5) than the odd function e1(v)
used in transformation (4).
5.5. Conclusions on one-way speed of light and the parameter e(v)
On the basis of (61) it is obtained
+
+ +−⋅=
x
x
ccv
vccce
2
2)(
ψγ
(63)
On the basis of (62) it is obtained
−
− −+⋅=
x
x
ccv
vccce
2
2)(
ψγ
(64)
On this basis, it is obtained
+
+
−
− +−⋅=
−+⋅
x
x
x
x
ccv
vccc
ccv
vccc2
2
2
2)()(
ψγ
ψγ
(65)
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vcc
cvc
c
c
xx
−−=−+ +−
22
(66)
+
+
+−
−=−=
x
x
xx c
cccc
c
c
c
c 22
222
(67)
Ultimately, the relation between one-way speed of light in a vacuum parallel to x' axis is
obtained
+
+−
−=
x
xx
cc
ccc
2 (68)
From formulas (61) and (62) there is a valid conclusion on the parameter e(v). Let us check
for what values of the parameter e(v) it occurs, according to what was assumed in relation (2), i.e.
00 ≤∧≥ −+xx cc (69)
From (61) and (62) results that there must occur
≤+−⇒≤
≥++⇒≥
−
+
0)()(
)(0)(
0)()(
)(0)(
2
2
vccvvev
vvc
vccvvev
vvc
x
x
γψγψ
(70)
It follows that for inequalities (69) to occur, the parameter e(v) must meet the following
conditions
=+−
≤⇒≤
=−+−
≥⇒≥
−
+
max
min
])([)(
1)(0)(
])([)(
1)(0)(
vvevc
vc
cvvvevc
vvevc
vc
cvvvevc
x
x
ψ
ψ (71)
Fig. 4. Range of function values e(v)⋅v for which there is no apparent backward travel of light in time.
If conditions (71) are not met for some inertial system then the value of one-way speed of
light measured in this system is inconsistent with the time arrow. This means that the light may
-3 -2 -1 0 1 2 3-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
v [108 m/s]
e(v)⋅v [10–8
s/m]
[e(v)⋅v]max
[e(v)⋅v]min
STW: e(v)⋅v = –vγ (v)/c2
STE: e(v)⋅v = 0
cx–(v) = ±∞
cx+(v) = ±∞
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seem to move back in time (its tide time is negative). This causes the velocity of light cx+(v) that is
consistent with x-axis direction to be negative, or the velocity of light cx–(v) that is not consistent
with x-axis direction to be positive. Then one of the inequalities will not be met (69). However,
equation (2) is still true, as it is more general than the one adopted at the beginning, for the purpose
of determining attention of inequalities (69).
Diagram 4 illustrates the inequalities (71). Functions [e(v)⋅v]min and [e(v)⋅v]max determine the
strip in which the function values e(v)⋅v must be located in order to prevent any inertial system from
experiencing the effect of apparent backward travel of light in time. This diagram also shows the
function values e(v)⋅v for STR (equation (75)) and STE (equation (84)).
Fig. 5. One-way speed of light in vacuum as a function of velocity v, for e(v)⋅v = –3vγ (v)/c2.
Figure 5 shows an example of how the values of one-way speed of light cx+(v) and cx
–(v)
depend on the speed of inertial system in which the observer is located when the parameter
e(v)⋅v = –3vγ (v)/c2.
It is advisable to consider a light impulse moving in the direction of x-axis. The impulse
moves from point x1 to point x2 > x1. Two clocks are required to measure one-way speed of light
cx+(v). The clock Z1 at point x1 measures the moment t1 when a light impulse is emitted. The clock Z2
at point x2 measures the moment t2 when a light impulse reaches it. In case shown in Figure 5, the
clocks in inertial systems are so desynchronized with parameter e(v) that in the inertial system
moving with velocity v = c/2 there is an equation t1 = t2. In this situation, the one-way speed of light
measurement gives an infinite value as
±∞=±
=−−
=+
0)2/(
12
12 L
tt
xxccx (72)
In fact, light in this inertial system has finite velocity because it has finite velocity in the
ether. The infinite velocity in (72) is caused by desynchronization of clocks. The clock Z2 is exactly
as late in comparison to the clock Z1 as the time it takes for the light to reach from point x1 to point
x2. Thus, equations (61) and (62) do not represent the actual velocity of light in a vacuum, but the
measurement result of this velocity using clocks that are desynchronized when e(v) ≠ 0.
In the inertial systems (Figure 5) moving at velocities v > c/2 the clocks are already so
desynchronized that the measurement of one-way speed of light cx+(v) gives negative values. This is
due to the fact that clock Z2 is late in comparison with clock Z1 for more time than the light needs to
reach from point x1 to point x2. In these inertial systems t2 – t1 < 0. Therefore, the light moving from
point x1 to point x2 apparently reverses in time.
-3 -2 -1 0 1 2 3-1
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1
e(v)⋅v [10–8
s/m]
v [108 m/s]
[e(v)⋅v]max
cx–(v) = ±∞
[e(v)⋅v]min
cx+(v) = ±∞
e(v)⋅v = –3vγ (v)/c2
-3 -2 -1 0 1 2 3
-10
-8
-6
-4
-2
0
2
4
6
8
10
cx+(v), cx
–(v) [10
8 m/s]
v [108 m/s]
cx–(v)
cx–(v)
cx+(v)
cx+(v)
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The fact that the moving back light in time is apparent, not real, will also be explained in
subsection 7.7. The significance of parameter e(v) is also discussed in Chapters 7.7, 8 and Błąd! Nie
można odnaleźć źródła odwołania..
6. General form of transformations expressed from one-way speed of light
In transformations (46)-(47), it is possible to replace the parameter e(v) with one-way speed
of light cx+(v) thanks to relation (63). Then the transformation from universal frame of reference U
to inertial frame of reference U' is obtained in the form of
=′
=′
−=′
+−⋅−+
+−⋅=′ +
+
+
+
zz
yy
tvxx
tvcc
vcccx
cc
vccct
x
x
x
x
ψ
ψ
ψγ
ψγ
ψγψγ
1
1
)(
)(1)(2
2
2
2
(73)
However, from the inertial frame of reference U' to the universal frame of reference U, the
transformation takes the form of
′=
′=
′+′
+−−=
′+′+−
−=
+
+
+
+
zz
yy
tvxvcc
vcccx
txcc
vccct
x
x
x
x
ψψ
ψγψγγψ
ψγψγ
2
2
2
2
)(
)(
(74)
In the same way, transformations (46)-(47) can be written on the basis of (64) using one-
way speed of light cx–(v).
Thanks to transformations (73)-(74), it is possible to define any transformation that meets
the I-IV assumption on the basis of two parameters, i.e. transverse contraction ψ (v) and one-way
speed of light in vacuum cx+(v).
Thanks to transformations (46)-(47), it is possible to define any transformation that meets
the I-IV assumption on the basis of two parameters, i.e. transverse contraction ψ (v) and the
parameter of clock synchronization in inertial frames of reference e(v).
Thanks to transformations (43)-(44), it is possible to define any transformation that meets
the I-IV assumption on the basis of two parameters, i.e. time dilation f (v) (resulting from(50)) and
the parameter of clock synchronization in inertial frames of reference e(v).
The importance of parameter e(v) is explained further in the article.
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7. Special cases of transformation
7.1. Lorentz transformation – Special Theory of Relativity transformation
If we assume that
−−=−=
=
2
2
222 m
s1
)/(1
11)()(
]1[1)(
ccvcvve
v
γ
ψ (75)
then transformations (46)-(47) take the form of Lorentz transformation on which Special Theory of
Relativity is based. From the universal frame of reference U to the inertial frame of reference U',
the transformation takes the form of
=′−=′
=′
+−=′
zztvxx
yytxc
vt
)(
2
γ
γ (76)
From the inertial frame of reference U' to universal frame of reference U, the transformation
has the following form
′=′+′=
′=
′+′=
zztvxx
yytxc
vt
)(
2
γ
γ (77)
There are only two transformations (46)-(47), in which the corresponding coefficients in
transformation and in reverse transformation have the same value (with the accuracy to sign
resulting from the direction of velocities v). These are the Lorentz transformation and further shown
the Galilean transformation. For this reason, in Lorentz’s transformation the systems U and U'
become indistinguishable.
7.2. Lorentz transformations with transverse contraction
If we assume that
−−=−=
2
2
222m
s1
)/(1)(
11
)(
)()(
ccvvcv
vve
ψψγ
(78)
then transformations (46)-(47) take the form of transformation, which can be called Lorentz
transformations with transverse contraction. From the universal frame of reference U to the inertial
frame of reference U', the transformations take the form of
=′−=′
=′
+−=′
zztvxx
yytxc
vt
ψψγ
ψψγ
1)(
12
(79)
From the inertial frame of reference U' to universal frame of reference U, the
transformations have the following form
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′=′+′=
′=
′+′=
zztvxx
yytxc
vt
ψψγ
ψψγ
)(
2 (80)
It should be explained where the idea of such a generalization of Lorentz’s transformation
came from in this article. In relation to formula (61) the one-way speed of light raises a natural
question, for which parameters e(v) and ψ (v) velocity of light in the inertial frame of reference will
have a value c in each direction. On the basis of (61), for light moving along the axis x', the
equation must be met
vccve
cc
++=
2
2
γψ
(81)
223 ccvccve =++γψ
(82)
I.e. for one-way speed of light to have the exact value c, the following must occur
2
1
ce
ψγ
−= (83)
It is easy to check on the basis of velocity transformations (55) that for all considered
transformations (46)-(47) the light moving parallel to y' axis will also have value c of one-way
speed in U' system. It also results directly from assumption IV, which is shown in Figure 2. Also
using numerical methods, it was verified for various cases of the function ψ (v) that one-way speed
of light in kinematics described by transformations (79)-(80) always has the value c.
It follows that there are infinitely many kinematics, in which one-way speed of light in
a vacuum, in every inertial frame of reference, is constant and is c. They are based on
transformations (79)-(80). The Special Theory of Relativity is only one of the infinite number of
such kinematics (transformation (76)-(77)).
In kinematics (79)-(80), in which we assume ψ (v) ≠ 1, the inertial frames of reference are
distinguishable, and there is a universal frame of reference, which was indicated by the symbol U.
The system U is distinguished by the way in which, according to transformation (46)-(47), the
lateral dimensions of bodies moving in relation to this system change. Therefore, such theories do
not meet the principle of equivalence of all inertial frames of reference.
In modern physics it is believed that one-way speed of light in a vacuum is absolutely
constant, i.e. it has the same value in every direction of propagation and for every observer. On this
basis STR Einstein was derived. It has been shown above that there are infinitely many kinematics
that meet this condition. The STR is distinguished as it additionally assumes the principle of
equivalence of all inertial frames of reference, i.e. that there is no such a physical phenomenon,
which distinguishes some inertial frame of reference. This comes down to the fact that the
corresponding coefficients in transformation and in reverse transformation must have the same
value (with the accuracy to sign resulting from the direction of velocities v). Among
transformations (79)-(80), only the Lorentz transformation (76)-(77) meets such an additional
assumption. However, there are no experimental grounds for assuming the principle of equivalence
of all inertial frames of reference. This principle has been introduced into physics in an arbitrary
manner.
Experimental evidence of the existence of a universal frame of reference is known. It is the
measurement of anisotropy of cosmic microwave background discussed in the Nobel dissertation
[7]. It turns out that electromagnetic cosmic microwave in a range of 300 GHz reaches from all
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cosmic sides. Cosmic microwave in our frame of reference has dipole anisotropy. Cosmic
microwave reaching from the side of Lion constellation has a little more energy, while the one
reaching from the side of Aquarius constellation has a little less energy (Figure 6). If Doppler effect
is taken into account, it is possible to determine the frame of reference, in which cosmic microwave
background is homogeneous. Such a frame of reference is unique in relation to all others. The
existence of such a universal frame of reference suggests that even if one-way speed of light in
a vacuum was constant, the correct kinematics model is not the Special Theory of Relativity based
on Lorentz transformation (76)-(77), but a model based on some other transformation of (79)-(80)
form.
Fig. 6. Dipole anisotropy of cosmic microwave background
shown in Hammer-Aitoff projection (own elaboration based on [7]).
In the article [10] on the basis of Special Theory of Ether without transverse contraction, the
velocity of Solar System in relation to the system in which cosmic microwave background is
homogeneous is determined. A velocity of 369,3 km/s was obtained there (Figure 6), but the value
of this velocities will be different within other kinematics.
7.3. Transformations of Special Theory of Ether with transverse contraction
If we assume that
0)( =ve (84)
then transformations (46)-(47) take the form of transformations on which the Special Theory of
Ether is based with transverse contraction derived in the article [10]. From the universal frame of
reference U to the inertial frame of reference U', the transformations take the form of
=′−=′
=′=′
zztvxx
yytt
ψψγ
ψψγ1
)(
11
(85)
From the inertial frame of reference U' to universal frame of reference U, the
transformations have the following form
′=′+′=
′=′=
zztvxx
yytt
ψψγγψ
ψψγ (86)
galactic plane
K 0,0102,726 ±=vT mK 0,0173,358 ±=∆+ vT
mK 0,0173,358 ±−=∆− vT cv ⋅≈±= 0,001232km/s3,3369,3
center
of the galaxy
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This is a whole class of transformations in which the simultaneity of events is absolute,
which means that the indications of clock do not depend on the coordinates of position. Kinematics
based on these transformations differ in physical properties, e.g. transverse contraction and time
dilation.
7.4. Transformation of Special Theory of Ether without transverse contraction
If we assume that
0)(
1)(
=
=
ve
vψ (87)
then transformations (46)-(47) take the form of transformation on which the Special Theory of
Ether is based without transverse contraction derived in the article [9]. From the universal frame of
reference U to the inertial frame of reference U', the transformation takes the form of
=′−=′
=′=′
zztvxx
yytt
)(
1
γγ (88)
From the inertial frame of reference U' to universal frame of reference U, the transformation
has the following form
′=′+′=
′=′=
zztvxx
yytt
γγ
γ1 (89)
In this case of the Special Theory of Ether, transverse contraction does not occur (czyli
ψ (v) = 1). The Special Theory of Ether derived based on transformation (88)-(89) is closely linked
to the Special Theory of Relativity by Einstein. This was proven in the work [8].
The transformation (89) was already derived in articles [2], [4] by another method. In those
articles the authors obtained such transformation from the Lorentz transformation thanks to the
synchronization of clocks in inertial frames of reference by the external method. The transformation
obtained in the works [2], [4] is the Lorentz transformation differently written down after a change
in the manner of time measurement in the inertial frame of reference, this is why the properties of
the Special Theory of Relativity were attributed to this transformation. In the article [9] the
transformation (88)-(89) has a different physical meaning than the Lorentz transformation, because
according to the theory outlined in that article, it is possible to determine the speed with respect to
a universal frame of reference by measurement. So the universal frame of reference is real, and this
is not a freely chosen inertial frame of reference.
7.5. Transformation of Special Theory of Ether with absolute time
If we assume that
0)(
1)/(1)(/1)( 2
=
≤−==
ve
cvvv γψ (90)
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then transformations (46)-(47) take the form of transformation in which the absolute time occurs.
From the universal frame of reference U to the inertial frame of reference U', the transformation
takes the form of
=′−=′
=′=′
zztvxx
yytt
γγ
γ
)(2
(91)
From the inertial frame of reference U' to universal frame of reference U, the transformation
has the following form
′=′+′=
′=′=
zztvxx
yytt
γγ
γ11
1
2
(92)
In kinematics based on this transformation, time elapses the same way in all inertial frames
of reference, just like in Galilean transformations. It is very interesting that the theory with the
absolute time which meets the conditions of Michelson-Morley and Kennedy-Thorndike
experiments is possible.
7.6. Transformation of Special Theory of Ether without longitudinal contraction
If we assume that
0)(
1)/(1/1)()( 2
=
≥−==
ve
cvvv γψ (93)
then transformations (46)-(47) take the form of transformation on which the Special Theory of
Ether is based without longitudinal contraction. From the universal frame of reference U to the
inertial frame of reference U', the transformation takes the form of
=′−=′
=′=′
zztvxx
yytt
γ
γγ1
112
(94)
From the inertial frame of reference U' to universal frame of reference U, the transformation
has the following form
′=′+′=
′=′=
zztvxx
yytt
γγ
γγ2
2
(95)
In kinematics based on this transformation the longitudinal dimensions (parallel to x and x'
axes) are the same for observers from every inertial frame of reference. This is due to differentials
from transformation (94)-(95)
tdvxddx
dtvdxxd
′+′=
−=′2γ
(96)
I.e.
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xddxtd
dxxddt
′=⇒=′
=′⇒=
0
0 (97)
7.7. Extended Galilean transformations and conclusions on the parameter e(v)
If we assume that
)1)(0/(1)(
1)/(1/10/ 2
≅⇒→∨=
≅−=⇒→
vcvv
cvcv
ψψ
γ (98)
then transformations (46)-(47) take the forms that can be called the extended Galilean
transformations. From the universal frame of reference U to the inertial frame of reference U', the
transformations take the form of
=′−=′
=′−+=′
zztvxx
yytvexvet )1( 2
(99)
From the inertial frame of reference U' to universal frame of reference U, the
transformations have the following form
′=′+′−=
′=′+′−=
zztvxvex
yytxvet
)1(2
(100)
The transformations (99)-(100) applies when velocity v is very small in relation to c, or
simply when c = ∞. Then on the basis of (61) and (62) the one-way speed of light flowing along x-
axis is
∞=
== −+
c
vvevcvc xx
)(
1)()(
(101)
On the basis of dependency (101), important conclusions can be drawn. One-way speed of
light in a vacuum has an infinite value (c = ∞) in relation to the universal frame of reference. Then,
of course, this velocity has an infinite value in every inertial system. However, according to (101)
the one-way speed of light in the inertial system is 1/(e v). This seems to be contradictory.
Fig. 7. Measurement of the velocity of light in an inertial system when the clocks are desynchronized in the system
and when the light in the universal frame of reference (ether) has infinite velocity.
However, there is no contradiction in this. It should be noted that in order to measure one-
way speed it is necessary to use at least two motionless clocks in the system in which the
measurement is carried out. Different items of clocks are used in the universal frame of reference
than in the inertial system. If in the inertial system the clocks are desynchronized, the measurement
c = ∞
4
2
3
6 5
12 1
7
10
8
9
11
U'
c = –∞
4
2
3
6 5
12 1
7
10
8 9
11
4
2
3
6 5
12 1
7
10
8 9
11
U - ether 4
2
3
6 5
12 1
7
10
8
9
11
t'0 = 0 t'1 ≠ 0
t0 = 0 t1 = 0
a)
b)
x' = 0 x' = D'
x = 0 x = D
v
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of light speed moving with infinite velocity can give a seeming finite value. This has been
illustrated in Figure 7.
In part b) of the figure, the universal frame of reference is shown. The light is sent from
point x = 0 at the moment t0 and immediately reaches point x = D at the moment t1. As it is assumed
in the universal frame of reference, the velocity of light is infinite, t0 = t1 = 0.
In part a) of the figure, the inertial system U' is shown. At the moment under consideration,
the two clocks of this system are located directly next to the two clocks of system U. Due to length
contraction, the distance of clocks measured in system U' is D' and may have a different value than
D measured in system U. The clock at point x' = 0 indicates the time t'0 = 0, but the clock at point
x' = D' indicates another time t'1 ≠ 0. According to the observer from system U', the light was sent at
the moment t'0 = 0, while to point D' it reached at the moment t'1 ≠ 0. Therefore, in system U' the
one-way speed of light is
−∞>
∞<
′−′′
=+
01
)(tt
Dvcx (102)
The velocity (102) is the result of a measurement carried out by desynchronized clocks in
system U'. It is not a true velocity of light, which in this case has an infinite value. What’s more, the
clocks in the inertial system U' can be so desynchronized that the light will move back in time. It
will be so when t'1 < t'0. Such cases were discussed in Chapter 5.5.
A similar situation is obtained when the light moves in the opposite direction, i.e. from point
x = D to point x = 0.
The situation shown in Figure 7 occurs for transformations where the parameter e(v) ≠ 0
(e.g. in the Special Theory of Relativity). Then the clocks passing next to each other already at the
moment of their synchronization indicate other values. The above example shows that then the one-
way speed of light (61) and (62) measured in inertial systems do not reflect the real velocity of light
in these systems.
Therefore, the parameter e(v) ≠ 0 causes desynchronization of clocks. Readings from such
clocks should not be taken literally, and theories based on such a parameter, such as STR, should be
interpreted differently than it is done in modern physics. This subject will be further elaborated in
Chapter 8.
In case of the extended Galilean transformations in the inertial frame of reference U' (but not
in system U ), the clock indications have been rearranged (the clocks have been desynchronized) to
the natural setting occurring in Galilean transformation. For this reason, in time transformations
there is a factor depending on the position x or x'.
7.8. Galilean transformation
If we assume that
)0)(0/(0)(
)1)(0/(1)(
1)/(1/10/ 2
≅⇒→∨=
≅⇒→∨=
≅−=⇒→
vecvve
vcvv
cvcv
ψψ
γ
(103)
then transformations (46)-(47) take the form of Galilean transformation on which classical
kinematics is based. From the universal frame of reference U to the inertial frame of reference U',
the transformation takes the form of
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=′−=′
=′=′
zztvxx
yytt (104)
From the inertial frame of reference U' to universal frame of reference U, the transformation
has the following form
′=′+′=
′=′=
zztvxx
yytt (105)
In Galilean transformation, the corresponding coefficients in transformation and in reverse
transformation have the same value (with accuracy to the sign resulting from the direction of
velocities v). For this reason, in the Galilean transformation, as in the Lorentz transformation, the U
and U' systems become indistinguishable.
The Galilean transformation can be treated as an approximation of all linear transformations
derived in this article for small velocities v, i.e. when v << c. Therefore, classical kinematics is
consistent with experiments on small velocities v regardless of which of the infinitely many possible
kinematics is the best model of real processes.
The transformation (104)-(105) applies when velocity v is very small in relation to c, or
simply when c = ∞. Then on the basis of (61) and (62) the one-way speed of light flowing along x-
axis is
∞==−= −+cvcvc xx )()( (106)
8. Physical significance of parameters occurring in transformations and
discussion of relativity basics
8.1. Parameters f (v), a(v) and ψ (v)
From formulas (50) and (51) for time dilation, it results that the parameter f (v), which occurs
in transformation (43)-(44), describes time dilation. For the motionless observer in relation to
universal frame of reference, the time in inertial frame of reference elapses f (v) times faster (1/f (v)
times slower) than in its universal frame of reference.
From formulas (52) and (53) for longitudinal contraction it results that parameter a(v),
which occurs in transformations (5) and (11), describes longitudinal contraction (i.e. parallel to
velocities v) of bodies in motion in relation to bodies resting in relation to the universal frame of
reference U. For the motionless observer in relation to universal frame of reference, the moving
body is a(v) times shorter (1/a(v) times longer) than the same motionless body in relation to the
universal frame of reference.
The parameter ψ (v), which occurs in transformation (46)-(47), describes transverse
contraction (perpendicular to velocities v) of bodies moving in relation to bodies resting in relation
to the universal frame of reference U (Figure 2). That is, the moving body is ψ (v) times wider
(1/ψ (v) times narrower) than the same motionless body in relation to the universal frame of
reference.
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8.2. Parameter e(v) = 0
On the basis of transformations (43)-(44) and (46)-(47) it can be concluded that parameter
e(v) can be treated as a way of clock synchronization in the inertial frames of reference. Consider
the case when e(v) = 0. Then the time transformation (85), from which the following is obtained
)00(1
=′⇒=⇒=′ ttttψγ
(107)
This means that for e(v) = 0, the clock synchronization in system U' consists in the fact that
if the clock of system U indicates time t = 0, then according to (107), the clock of system U' next to
it is also reset to zero, that is t' = 0. This way of synchronization is shown in Figure 8.
Fig. 8. External clock synchronization (e(v) = 0).
The clocks in universal frame of reference U were synchronized with light, which in this system has one-way speed c.
In the time under consideration, when all clocks of the system U indicate time t = 0, the beginnings of systems U and U'
coincide. On each clock passing by clock t = 0 the time is also set t' = 0.
In this particular case, when e(v) = 0, one-way speed of light (61) and (62) take the
following values
vc
cvcve x +
=⇒= +2
)(0)( (108)
vc
cvcve x −
−=⇒= −2
)(0)( (109)
8.3. Parameter e(v) ≠ 0
Let’s consider cases for any parameter e(v). Transformation of time (47) has the form of
txvet ′+′−= ψγψ 2 (110)
When the clocks in system U indicate time t = 0, then according to Figure 1 the beginnings
of systems coincide. From equation (110) it results that on the clock from system U' located next to
zeroed clock from system U, the value t' is set, which is expressed by the formula
xve
tt ′=′⇒=γ
ψ0 (111)
Synchronization of clocks in the system U' is shown in Figure 9. From the perspective of
system U, clocks in the system U' are desynchronized, as their indications depend on the position
and not only on the time lapse. If the observer from system U' measures one-way speed of light,
U'
x' 0
0
v
t = 0
t' = 0 t' = 0 t' = 0
t = 0 t = 0
U
x c
t =0 ⇔ t' =0 t =0 ⇔ t' =0 t =0 ⇔ t' =0
c
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then on some clock reads the initial time, while on another clock measures the final time. These
clocks can always be set in such a way (desynchronize them) that one-way speed of light will have
the predetermined value of cx+(v) and cx
–(v). The same effect can also be achieved in classical
mechanics. If to move forward the indications of clock from which the final time is read, the
seemingly velocity of body will be smaller, while if to move back the indications of this clock, the
seemingly velocity of body will be larger.
Fig. 9. External clock synchronization (e(v) ≠ 0).
The clocks in universal frame of reference U were synchronized with light, which in this system has one-way speed c.
In the time under consideration, when all clocks of the system U indicate time t = 0, the beginnings of systems U and U'
coincide. On each clock passing by clock t = 0 the set time t' = ψevx'/γ.
For considered transformations, if the clocks in system U' are set according to formula (111)
then one-way speed of light will have the value expressed in formulas (17), (18) and (61), (62).
However, this does not mean that it is a velocity resulting from the speed at which the real
processes on which the clocks are based take place. This can only be the result of setting the clocks
in inertial frames of reference as shown in Figure 9. As kinematics model should be expected to
describe real processes, clocks in inertial frames of reference cannot be set freely, only in a way that
corresponds to the described processes.
If e(v) ≠ 0, then formulas (50) and (51) are different, as well as formulas (52) and (53) are
different. Therefore, observers from U and U' systems draw different conclusions on time dilation
and longitudinal contraction on the basis of their measurements (they evaluate the relative passage
of time in their systems differently and they evaluate the proportions of horizontal lines in their
systems differently). Such a situation can be interpreted in such a way that their measuring devices
have not been synchronized and for this reason they measure something else. Only if e(v) = 0, then
their measurements of time dilation and longitudinal contraction give the same result, i.e. only then
the clocks with their frames of reference were correctly synchronized.
Consider the light impulse sent to the right from the beginning of system U' in time
synchronization of clocks (Figure 9). In time t'1 = 0, the impulse was in position x'1 = 0, while in time
t'2 it was in position x'2. On the basis of (61), it is possible to write that
vc
c
xx
vex
c
vccve
vc
x
vc
xxttt
xx
+
′+′=′
++=
′=
′−′=′=′−′ ++ 2
2222
2
212212
)()( γψγ
ψ
(112)
Formula (112) may have different interpretations. In the Special Theory of Relativity, the
interpretation is that clocks in the inertial frame of reference U' are correctly synchronized.
Therefore, the light actually needed t'2 time to travel the distance of x'2. Then actually for the
observer from system U' the light has one-way speed expressed by the formula (61). For STR on the
basis of (75) this velocity has the value of
U'
x' 0
0
v
t = 0
t' =ψevx'1 /γ t' = 0
t = 0 t = 0
U
x c c
cx–(v) cx
+(v) cx–(v) cx
+(v)
x'1
t' =ψevx'2 /γ
x'2
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t =0 ⇔ t' =ψevx' /γ
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c
vccvc
c
vccve
cvcx =
++−=
++=+
2
2
2
2
2
11)(
γγγ
ψ (113)
However, it is important to remember that the values t'2 and t'1 = 0 are read from two different
clocks. If these clocks are not synchronized correctly, then the velocity (113) is apparent. Then the
velocity (61) does not reflect the course of physical processes, but is caused by the way clocks are
set in the inertial frame of reference U'. For such an interpretation, after taking into account (108),
the formula (112) will be written in the following form
)0(
222
22 =
′=
+
′=′−′ +
ec
x
vc
c
xx
vet
xγψ
(114)
That is, when a light impulse was emitted, then the value (111) was set on the clock at point
x'2, but in reality the value of 0 resulting from the correct synchronization, i.e. from formula (107),
should be set. Therefore, when the impulse reaches point x'2, then the correct indication of a clock in
that point is not t'2, but only
22 xve
t ′−′γ
ψ (115)
With this interpretation, the left side of equation (114) is the real time that an impulse
needed to reach point x'2. If the clock at point x'2 is correctly synchronized according to the formula
(107), then the one-way speed of light will be (108) or (109), and not (61) or (62).
It follows from the above that if the parameter e(v) ≠ 0, then different interpretations of
transformation (43)-(44) and (46)-(47) are possible. In the Special Theory of Relativity the
interpretation is that readings from the clocks should be treated literally in this situation. This leads
to the fact that different observers measuring the same physical phenomena obtain different results
(except for one-way speed of light in a vacuum). In STR it was considered to be a property of
space-time and not a result of synchronization of clocks between inertial frames of reference.
For the second interpretation of the parameter e(v), adopting that e(v) ≠ 0 causes the clocks
to be desynchronized in the inertial frame of reference, but all the time it is the same kinematics as
the one based on parameter e(v) = 0. After the clocks are desynchronized the values shown by these
clocks should not be treated literally. If the calculation takes into account the fact that clocks are
desynchronized, then each kinematics with the parameter e(v) ≠ 0 comes down to kinematics with
the parameter e(v) = 0. According to this interpretation, the parameter e(v) does not allow other
kinematics to be obtained. All kinematics possible for the I-IV assumptions adopted in this article
are included in transformations (85)-(86). Kinematics differ in only one parameter of transverse
contraction ψ (v). In monograph [8] it is shown, that with such an interpretation STR becomes STE
with a universal frame of reference. According to this interpretation, numerous conclusions of
modern physics drawn from the mathematics on which STR is based are incorrect. Therefore, STR
mathematics is correct, but the interpretation of this mathematics is not correct.
Introduction of parameter e(v) ≠ 0 for the Galilean transformation (104)-(105) leads to
transformation (99)-(100). This means that after desynchronization of clocks between different
inertial frames of reference, a transformation is obtained in which the values indicated by the clocks
of system U' depend on their position. However, it is still classical kinematics, only written in
a more complex way. After all, the way of setting the initial values on the clocks of system U' has
no influence on the course of physical processes in classical mechanics. However, it is formally
possible to write this kinematics with the parameter e(v) ≠ 0. If in classical kinematics written with
transformation (99)-(100), the values indicated by desynchronized clocks are treated literally, then
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there are similar conclusions to those drawn from the Lorentz transformation in the Special Theory
of Relativity. That is, for example, that the simultaneity of events, time dilation and longitudinal
contraction are relative. However, if the second interpretation is adopted, then all kinematics (99)-
(100) come down to the classical kinematics described by transformations (104)-(105).
In this article, the interpretation of parameter e(v) was adopted in such a way that it
describes the desynchronization of clocks in inertial frames of reference. In monograph [8], in
chapter “What is the Special Theory of Relativity (STR)” it was shown that the parameter e(v) can
be assigned another, third interpretation. The parameter e(v) can describe displacement in time and
space that the transformation implements. It is commonly believed that the transformation is related
to clocks that are directly adjacent to each other in a given time. That is, it recalculates coordinates
of the same event seen from different frames of reference. This is how Lorentz’s transformation in
the Special Theory of Relativity is understood. But the transformation can calculate the coordinate
of clock’s position to the coordinate of the same clock in another frame of reference, but one at
which the clock will be in the future or was in the past. With this interpretation, the transformation
does not calculate the coordinates of the same event, but the coordinates of different events. With
this interpretation of parameter e(v) the transformation is related to coordinates of the same event
only if e(v) = 0.
9. Importance of parameter e(v) for time dilation
In case of transformations, in which the parameter e(v) ≠ 0 is not possible to state directly
from the clock readings that in some inertial system time elapses slower or faster than in universal
frame of reference (or other inertial system).
Let us consider the situation shown in Figure 10. In the inertial system U' there is an
observer O', while in the universal system U there is an observer O.
Fig. 10. Times measured by two observers from different reference systems.
The observer O' has in his system Bi clocks. The clock B0 is located directly next to him.
The observer O has in his system Ai clocks. The clock A0 is located directly next to him. Observers
O and O' cannot directly compare A0 and B0 clocks because they are far apart and in constant
relative motion.
Each of these observers can at any time read the time from the two clocks that are directly
next to him. The observer O can read the time from his A0 clock and from Bi clock passing by. From
a particular Bi clock he can read the time only once, when that particular clock is next to him. Each
time he reads the time from Bi clock, it is a different clock.
x', t' v
U - ether
U'
O
O'
x, t
B0 B1 B2 B3
A3 A2 A1 A0
these clocks fly next
to the observer O
these clocks fly next
to the observer O'
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The same applies to the observer O'. The observer O' can read the time from his B0 clock
and from Ai clock passing by. He can read the time from a specific Ai clock only once when that
particular clock is next to him. Each time he reads the time from Ai clock, it is a different clock.
The observer can read the time from the clock that is currently next to him. He can also read
the position of such a clock according to the coordinates of U and U' systems. The coordinate and
time transformation derived in this paper are used to convert readings carried out according to one
reference system to readings carried out according to another reference system.
In the situation under consideration, the time dilation equation (50) applies to the observer O
from the universal system, while the time dilation equation (51) applies to the observer O' from the
inertial system. In other words, the observer O evaluates the relative time elapse on the clocks he
compares in the following way
210 ve
dt
tddx −=
′⇒=
ψγ (116)
In turn the observer O' evaluates the relative elapse of time on the compared clocks in the
following way
ψγ1
0 =′
⇒=′dt
tdxd (117)
This means that if e(v) ≠ 0, then the observers O and O' will evaluate the relative time elapse
differently (this has already been noted in subsection 5.1). It should also be noted that the observer
O reads the time from clocks other than the observer O'.
For the observer O from the universal system, the time elapsed on Bi clocks is not measured
by one clock, but by many clocks passing one after the other. If Bi clocks are desynchronized, then
the observer O reading from them does not measure the real time elapse in U' system. In equation
(116) there is the factor e(v)⋅v2, which describes how the desynchronization of Bi clocks affects the
time dilation, measured by the observer O.
The observer O' from the inertial system evaluates time dilation on the basis of Ai clocks.
These clocks are motionless in relation to the ether and have been desynchronized by means of
light, which in assumption has one-way speed in the ether with a constant value of c. The
dependence (117) shows that parameter e(v) does not affect time dilation measurement, which is
performed by the observer O'. Therefore, Ai clocks were not desynchronized with this parameter.
The observer O' reads the real time elapse in the universal frame of reference U.
If e(v) ≠ 0, then the time dilation measurements by the observer O and O' are different.
Therefore, it is not objectively possible to state that time elapses faster in one system and slower in
another. However, it can be stated that their clocks are not desynchronized.
The fact that parameter e(v) describes how to desynchronize clocks in the inertial systems
can also be deduced from the time dilation dependency (50). The observer O, shown in Figure 10, is
motionless relative to the universal frame of reference U and evaluates the time elapse in its U
system on the basis of one A0 clock. As all clocks measure time according to the time arrow, the
time elapse on A0 clock meets the condition dt > 0. Based on (50) the following is obtained
0)()(
1)(00
2<′⇒
>∧>∧= td
vvvvedtdx
ψγ (118)
In other words, the observer O reads the time on successive Bi clocks and states that a later
reading indicate an earlier, not later, moment of time. If the observer O treated such readings
literally, as is currently done in the Special Theory of Relativity, he would conclude that in the
inertial system U' time reverses. However, this is not true, because by definition each Bi clock
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measures time according to the time arrow. The reason for such a strange measurement is that the
observer O when reading the time on Bi clocks does not measure the actual time elapse in the
inertial system U'. Its measurement is influenced by how the clocks of U' system are
desynchronized by the parameter e(v). That is, if Bi+1 clock is very late in relation to Bi clock
(ti+1 << ti), then the time elapse that the observer O will measure on Bi and Bi+1 clocks will be
negative (ti+1 – ti < 0). The way the clocks are desynchronized is shown in Figure 9. In order for this
effect to occur, the parameter e(v) must has positive and enough large values. This has been shown
in Figure 11.
Fig. 11. Influence of parameter e(v) on time measurement in a mobile inertial system by an observer with universal
frame of reference (dt > 0).
This issue has been addressed in another way in Chapter 7.7, where, on the example of
Galilean extended transformations, it has been shown that evaluating the time elapse on the basis of
two different clocks, even if they are from the same inertial system, leads to misleading conclusions
if the parameter e(v) ≠ 0. In this case, if the observer reads t0 on one clock and t1 on another, it does
not mean that time t1 – t0 passed between readings. The difference t1 – t0 is affected by the actual
time elapse, but also by the extent to which the two clocks are desynchronized.
10. Conclusion
The article presents the original method of studying the transformations of time and
coordinate in terms of acceptable interpretations that can be attributed to these transformations.
All possible linear transformations that meet the results of Michelson-Morley’s and
Kennedy-Thorndikea’s experiments (without turnovers) have been derived in this article. On the
basis of these transformations it is possible to build numerous kinematics with different physical
properties. Thus, there are infinitely many kinematics consistent with experiments in which velocity
of light was measured.
For each kinematics an infinite number of dynamics can be derived. The method that allows
this is shown in the papers [8] and [12].
In this article it was also shown that there are infinitely many different kinematics, in which
one-way speed of light in a vacuum has in each direction and in each inertial frame of reference the
e(v)⋅v [10–8
s/m]
-2 -1 0 1 2-5
-4
-3
-2
-1
0
1
2
3
4
5
v [108 m/s]
-3 3
e(v)⋅v=1/(γ (v)ψ (v) v)
dt' < 0
dt' < 0
dt' > 0
dt' = 0
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value of c (transformations (79)-(80)). The Special Theory of Relativity is only one of those
infinitely many kinematics.
The phenomenon of dipole anisotropy of cosmic microwave background proves that there is
a universal frame of reference, in which this cosmic microwave background is homogeneous. This
shows that in reality the inertial frames of reference are experimentally distinguishable, i.e. they are
not equivalent. It follows that even if we assume that one-way speed of light is absolutely constant,
the Special Theory of Relativity is not the correct model of real processes. If one-way speed of light
is absolutely constant, then the correct model of real processes will be kinematics based on one of
the Lorentz transformation with transverse contraction (79)-(80).
Kinematics, in which one-way speed of light is always constant, are possible if one assumes
the interpretation of parameter e(v) as adopted in the Special Theory of Relativity, i.e. that they
describe specific properties of space-time and not the desynchronization of clocks in inertial frames
of reference.
However, the parameter e(v) can be interpreted differently, i.e. in such a way that it
describes the way of desynchronizing clocks in inertial frames of reference in relation to the
universal frame of reference. In this article the thesis was formulated that assuming the parameter
e(v) ≠ 0 leads to desynchronization of clocks between different inertial frames of reference.
However, the way of setting the initial values on clocks located in inertial frames of reference does
not affect the physical processes. If such an interpretation of this parameter is assumed, then any
kinematics with parameter e(v) ≠ 0 comes down to kinematics based on parameter e(v) = 0.
Therefore, the only parameter that can differ from kinematics meeting the I-IV assumptions is the
transverse contraction parameter ψ (v). Then it is not possible kinematics in which one-way speed
of light is constant in every inertial frame of reference. All kinematics are included in
transformations (85)-(86). The one-way speed of light formula for these kinematics has been
derived in this article [10].
The paper shows that interpretation of parameter e(v) as assumed in STR leads to
contradiction (Chapter 7.7). Therefore, the commonly accepted in physics interpretation of this
parameter is mistaken. The correct interpretation of this parameter is that if e(v) ≠ 0, then the clocks
in inertial systems are desynchronized. Then it is not possible to compare readings from different
clocks of the same inertial system literally.
Regardless of how the parameter e(v) is interpreted, parameter ψ (v) is not a variation of
scale. This is obvious, if it is noticed that in every inertial system the measurements are carried out
using technically identical devices. Firstly, in some inertial system the identical clocks for time
measurement and identical rulers for distance measurement are generated. Then some of these
devices are transferred to other inertial systems. Transformations derived in this article describe the
relations between measurements carried out by such identical devices placed in the universal frame
of reference and various inertial systems. Any change to parameter ψ (v) changes the physical
properties of kinematics. It is sufficient to note that this parameter determines the time dilation
described by the formula (51). That is, the way in which time is measured by clocks moving in
relation to the universal frame of reference depends on the value of parameter ψ (v).
All experiments conducted by man were observed with inertial frames of reference moving
with small velocities relative to universal frame of reference. Such experiments do not provide an
answer on how the laws of nature look like for observers found in the inertial frames of reference
moving with large velocities relative to universal frame of reference. Therefore, in physical
theories, the results obtained in frames of reference available to the observer are extrapolated to all
other inertial frames of reference. But as, they are acceptable as valid models of real processes,
kinematics based on transformations that do not meet the III assumption in all inertial frames of
reference, but only in inertial frames of reference available for experiments. The introduction of
such transformations is presented in the article [13].
Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted: 5 August 2019 doi:10.20944/preprints201908.0048.v1
Derivation of all linear transformations that meet the results of Michelson-Morley’s experiment and
discussion of the relativity basics - Szostek Roman
32 www.ste.com.pl
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discussion of the relativity basics - Szostek Roman
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